Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 01, 2012	Sep. 01, 2012	Jun. 01, 2012	Mar. 01, 2012	Dec. 03, 2011	Aug. 27, 2011	May 28, 2011	Feb. 26, 2011	Dec. 01, 2012	Dec. 03, 2011	Nov. 27, 2010
Fair Value Of Assets And Liabilities Measured On A Nonrecurring Basis [Line Items]
Asset impairment charges	$ 846	$ 0	$ 671	$ 0	$ 0	$ 0	$ 0	$ 332	$ 1,517	$ 332	$ 8,785
Assets
Marketable securities	15,499				76,114				15,499	76,114
Derivative assets	830				1,862				830	1,862
Interest rate swaps	9,473				7,360				9,473	7,360
Cash-flow hedges	1,610								1,610
Liabilities [Abstract]
Derivative liabilities	956				1,181				956	1,181
Contingent consideration liability, continuing operations	1,649				1,893				1,649	1,893
Contingent consideration liability, discontinued operations	5,000								5,000
Defined Benefit Plans Fair Value Level 1 [Member]
Assets
Marketable securities	15,499				76,114				15,499	76,114
Derivative assets	0				0				0	0
Interest rate swaps	0				0				0	0
Cash-flow hedges	0								0
Liabilities [Abstract]
Derivative liabilities	0				0				0	0
Contingent consideration liability, continuing operations	0				0				0	0
Contingent consideration liability, discontinued operations	0								0
Defined Benefit Plans Fair Value Level 2 [Member]
Assets
Marketable securities	0				0				0	0
Derivative assets	830				1,862				830	1,862
Interest rate swaps	9,473				7,360				9,473	7,360
Cash-flow hedges	1,610								1,610
Liabilities [Abstract]
Derivative liabilities	956				1,181				956	1,181
Contingent consideration liability, continuing operations	0				0				0	0
Contingent consideration liability, discontinued operations	0								0
Defined Benefit Plans Fair Value Level 3 [Member]
Assets
Marketable securities	0				0				0	0
Derivative assets	0				0				0	0
Interest rate swaps	0				0				0	0
Cash-flow hedges	0								0
Liabilities [Abstract]
Derivative liabilities	0				0				0	0
Contingent consideration liability, continuing operations	1,649				1,893				1,649	1,893
Contingent consideration liability, discontinued operations	5,000								5,000
Cost Basis Investments Fair Value [Member]
Fair Value Of Assets And Liabilities Measured On A Nonrecurring Basis [Line Items]
Asset impairment charges									1,517
Trademarks And Trade Names Fair Value [Member]
Fair Value Of Assets And Liabilities Measured On A Nonrecurring Basis [Line Items]
Asset impairment charges										$ 332